------------[ cut here ]------------
WARNING: CPU: 0 PID: 671 at net/kcm/kcmsock.c:629 kcm_write_msgs+0x10ba/0x1990 net/kcm/kcmsock.c:629
Modules linked in:
CPU: 1 PID: 671 Comm: syz-executor.1 Not tainted 5.19.0-rc8-syzkaller-00126-ga41b17ff9dac #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:kcm_write_msgs+0x10ba/0x1990 net/kcm/kcmsock.c:629
Code: 07 00 00 48 8b 44 24 68 45 31 e4 48 8b 74 24 08 48 89 70 10 e9 d5 f3 ff ff e8 52 65 f9 f8 0f 0b e9 09 f5 ff ff e8 46 65 f9 f8 <0f> 0b 41 bc ea ff ff ff e9 b7 f3 ff ff e8 34 65 f9 f8 48 8b 7c 24
RSP: 0018:ffffc900056a77a8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000000000c0 RCX: 0000000000000000
RDX: ffff88807b13bb00 RSI: ffffffff888104ca RDI: 0000000000000001
RBP: ffff8880790398c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000008000
R13: ffff88807c599e40 R14: ffff888079039800 R15: 0000000000000000
FS:  00007fd9e47fe700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b5136a1b8 CR3: 0000000021da9000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kcm_sendmsg+0x1e1d/0x2430 net/kcm/kcmsock.c:1035
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x334/0x810 net/socket.c:2488
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2542
 __sys_sendmmsg+0x195/0x470 net/socket.c:2628
 __do_sys_sendmmsg net/socket.c:2657 [inline]
 __se_sys_sendmmsg net/socket.c:2654 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2654
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd9e3689209
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd9e47fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fd9e379c100 RCX: 00007fd9e3689209
RDX: 0000000000000001 RSI: 0000000020001f00 RDI: 0000000000000004
RBP: 00007fd9e36e3161 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000240008d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0725d2cf R14: 00007fd9e47fe300 R15: 0000000000022000
 </TASK>